Q: Why do we still use a dynamic inner loop (col <= row) for a hollow triangle?

Because we only want to evaluate the coordinate space that actually exists inside the triangle boundary. Evaluating the full N x N grid would require unnecessary blank space calculations.

Q: How do you combine multiple boundaries?

You use the logical OR (||) operator in your if-statement. If any one of the geometric boundary conditions is met, a star is printed.

Question 1

What is the formula for the anti-diagonal in a square?

Accepted Answer

Assuming 1-based indexing, the anti-diagonal occurs where the sum of the row and column coordinates equals N + 1.

Question 2

How do you identify the boundaries of a hollow triangle?

Accepted Answer

The boundaries are the first column (col == 1), the last row (row == N), and the diagonal edge where the column index equals the row index (col == row).

Question 3

Why do we still use a dynamic inner loop (col <= row) for a hollow triangle?

Accepted Answer

Because we only want to evaluate the coordinate space that actually exists inside the triangle boundary. Evaluating the full N x N grid would require unnecessary blank space calculations.

Question 4

How do you combine multiple boundaries?

Accepted Answer

You use the logical OR (||) operator in your if-statement. If any one of the geometric boundary conditions is met, a star is printed.

What is the formula for the anti-diagonal in a square?

More FAQs in Complex Boundary Conditions in Pattern Printing

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